9950000

素因数分解:

$2^4\times 5^5\times {\mathrm{199}}^1$

素因数の和:232

約数の個数: 60

約数和(自身を含む): 24217200

約数和(自身を除く): 14267200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 199, 200, 250, 398, 400, 500, 625, 796, 995, 1000, 1250, 1592, 1990, 2000, 2500, 3125, 3184, 3980, 4975, 5000, 6250, 7960, 9950, 10000, 12500, 15920, 19900, 24875, 25000, 39800, 49750, 50000, 79600, 99500, 124375, 199000, 248750, 398000, 497500, 621875, 995000, 1243750, 1990000, 2487500, 4975000, 9950000]

約数ペア:

[(1, 9950000), (2, 4975000), (4, 2487500), (5, 1990000), (8, 1243750), (10, 995000), (16, 621875), (20, 497500), (25, 398000), (40, 248750), (50, 199000), (80, 124375), (100, 99500), (125, 79600), (199, 50000), (200, 49750), (250, 39800), (398, 25000), (400, 24875), (500, 19900), (625, 15920), (796, 12500), (995, 10000), (1000, 9950), (1250, 7960), (1592, 6250), (1990, 5000), (2000, 4975), (2500, 3980), (3125, 3184)]